So a work colleague installed the Server 2016 Evaluation version recently whilst we awaited our MSDN keys, problem was with the MSDN keys now available he couldn’t activate the Eval version as it reported that the Edition cannot be Upgraded.

Fortunately a quick DISM command will resolve this allowing you to activate –

  1. Open a CMD window
  2. Enter the following – DISM /Online /Set-Edition:ServerStandard /ProductKey:your-product-key-here /AcceptEula
  3. Hit Enter and watch Windows do its thing, it will need to reboot in order to finish.

The TechNet article that runs through some of the Edition-Servicing commands is HERE

As a side note this does not work for the Core edition as my colleague also unfortunately found out.